1 /*
2 * Contains routines needed to support swiotlb for UniCore32.
3 *
4 * Copyright (C) 2010 Guan Xuetao
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11 #include <linux/pci.h>
12 #include <linux/cache.h>
13 #include <linux/module.h>
14 #include <linux/dma-mapping.h>
15 #include <linux/swiotlb.h>
16 #include <linux/bootmem.h>
17
18 #include <asm/dma.h>
19
unicore_swiotlb_alloc_coherent(struct device * dev,size_t size,dma_addr_t * dma_handle,gfp_t flags,struct dma_attrs * attrs)20 static void *unicore_swiotlb_alloc_coherent(struct device *dev, size_t size,
21 dma_addr_t *dma_handle, gfp_t flags,
22 struct dma_attrs *attrs)
23 {
24 return swiotlb_alloc_coherent(dev, size, dma_handle, flags);
25 }
26
unicore_swiotlb_free_coherent(struct device * dev,size_t size,void * vaddr,dma_addr_t dma_addr,struct dma_attrs * attrs)27 static void unicore_swiotlb_free_coherent(struct device *dev, size_t size,
28 void *vaddr, dma_addr_t dma_addr,
29 struct dma_attrs *attrs)
30 {
31 swiotlb_free_coherent(dev, size, vaddr, dma_addr);
32 }
33
34 struct dma_map_ops swiotlb_dma_map_ops = {
35 .alloc = unicore_swiotlb_alloc_coherent,
36 .free = unicore_swiotlb_free_coherent,
37 .map_sg = swiotlb_map_sg_attrs,
38 .unmap_sg = swiotlb_unmap_sg_attrs,
39 .dma_supported = swiotlb_dma_supported,
40 .map_page = swiotlb_map_page,
41 .unmap_page = swiotlb_unmap_page,
42 .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
43 .sync_single_for_device = swiotlb_sync_single_for_device,
44 .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
45 .sync_sg_for_device = swiotlb_sync_sg_for_device,
46 .mapping_error = swiotlb_dma_mapping_error,
47 };
48 EXPORT_SYMBOL(swiotlb_dma_map_ops);
49